1. To adopt a child in China, you may have following documents to be authenticated by Chinese Embassy or Consulate-General in Canada.
A. Written application for adoption (including the pledge of not maltreating and deserting the adopted child);
B. Personal identifications (including birth and citizenship certificates);
C. Certificate of marital status;
D. Certificate of occupation and financial status;
E. Health certificate;
F. Certificate of non-criminal record;
G. Document which testifies that the adoption accords with the current laws applied to adoption in Canada.
H. Family investigation report
2. All documents mentioned above shall be first notarized by a notary public and then be legalized by the Department of Foreign Affairs Canada or provincial authorities and finally be authenticated by the Chinese Embassy or Consulates-General.
Relevant link:
Instruction on document authentication or notarization